Gage-cock



(No Model.)

R. J. GOLVIN.

GAGE COOK.

No. 435,286. Patented Aug. 26,` 1890.

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UNITED STATES PATENT OFFICEa ROBERT J. coLvIN, or LANCASTER,PENNSYLVANIA GAG E-COCK.

SPECIFICATION forming part of Letters Patent No. 435,286, dated August26, 1890.

Application filed May 24, 1890. Serial No. 353,051. (No model.)

To all whom, it may concern:

Be it knownthat I, ROBERT J. CoLvIN, of Lancaster, in the county ofLancaster and State of Pennsylvania, have invent-ed certain new anduseful Improvements in Gage-Cocks; and I do hereby declare the followingto be a full, clear, and exact description of the in-' vention, such aswill enable others skilled in the art to which it pertains to make anduse it, reference being had to the accompanying drawings, which formpart of this speciication.

My invention relates to an improvement in automatic gage-cocks; and itconsists in, first, a seat provided with ratchets, and anautomatically-acting pawl for engaging with the ratchets and causing theseat to partially revolve each time, that the handle is operated;second, an automatically revolving and removable seat, and a suitablemechanism for causingthe seat to revolve, and third, the combination ofa spring-actuated handle, a pawl connected to the handle, and aremovable seat provided with ratchets and with which the pawl engages,as will be more fully described hereinafter.

The objects of my invention are to make the gage-cock entirely automaticin its operation, to provide a reversible valve or seat, so that when itis worn out upon one side it can be removed and reversed so as topresent an entirely new surface, and to cause the seat to revolve eachtime that the handle is operated, so that a new seat will always bepresented to the nipple.

Figure 1 is a side elevation of a gage-cock which embodies my invention,the cap-plate being removed. Fig. 2 is a horizontal section of thesame..

A represents that part of the gage-cock which is screwed into theboiler, B the handle, and C the pivot, by means of which the two parts AB are connected in the usual manner.

For the purpose of causing the'handle to be automatic in its operation,and to do away with the weights which have heretofore been applied tothe handle for the purpose of making it automatic in closing, there isapplied to the end of the pivotal bolt or rod@ a spring D of anysuitable construction. shown, one end of the spring is made to catch Ashere.

cess, upon the pivotal bolt- I, is placed the rel Y versible landrevolving` seat H, which may either be of the construction here shown orany other that may be preferred. The face portions of the seat or valvemay be made of lead, cork, or any other suitable material that maybepreferred, and the seat or valve is made reversible in position, so thatin case one face should become worn out it is only necessary to removethe pivotal rod or bolt I, take out the seat or valve, reverse it, andthen return it to position, when an entirely new face is presented. Inorder to cause this seat to partially revolve each time that the handleis operated, there is formed a ratchet .I upon each edge of the valve orseat, and with the upper one of these ratchets an automatically-actingdog O, pivoted to the part A, engages. Each time that the handle israised for the purpose oftesting the water the whole seat or valve israised, and the dog in dropping enga-ges with a new tooth of theratchet, and then when the handle is returned to position by means ofthe spring the dog causes the seat to revolve the distance of one ormore of the ratchets, and thus a new surface or bearing is presented tothe nipple. The consequence is that the nipple does not have the sameseat twice in succession, and hence the seat or valve will last anindenite length of time.

It will be seen from the above that this gage-cock is entirely automaticin its operation, and hence nothing is left to the j udgment or to theskill of the engineer or fireman. While the valve or seat can berevolved by hand, if so desired, the mere raising of the handle to testthe water causes the seat or valve to be moved and present a new surfaceto the nipple.

In all of the gage-cocks heretofore invented where a changeable bearingis shown, the bearings must be revolved by hand, and this IOO is to bedone only when the bearing4 or surface is worn out at a certain place.This requires a knowledge of the construction of the valve and awatchfulness upon the part of the engineer or fireman, which is entirelydone away with by the construction here shown and described, for everypartis made automatic in its operation.

Having thus described my invention, I claimv 1. In a gage-cock, the partor stein A, having a downwardly-extendng opening in its end and a handlepivoted at its inner upper portion to the outer upper portion of thestem, and a revolving seat journaled Spbstantially horizontally in thehandle below the opening in the stein, combined to operate substantiallyas shown.

2. In a gage-cock, the part A, which is to be vscrewed into the boiler,combined with a springactuated handle, a pivoted dog, and a revolvingseat or valve provided vwith ratch ets, substantially as set forth.

3. In a gage-cock, the stem having an opening, a handle pivoted thereto,a revolving seatjournaled in the handle, and an automatic mechanismoperated by the movement of the handle for revolvingthe seat5-substantially as set forth.

4. In a gagelcock, the combination of the part A, which is to be screwedinto the boiler,

a spring-actuated handle pivoted thereto, a

yVersely in the handle beyond the said open-A ing in the stern, wherebythe face of disk or seat engages the walls ofthe opening, and the seatadapted to be reversed, combined'to operate substantially as described.v

6. In a gage-cock, the stern having an open-Y ing, the handle Apivotedthereto, a revolving seat journaled in the handle, and a pawl forrevolving the seat, substantially as specified. In testimony whereof Iaffix my signature in presence of two witnesses.

ROBT. J. COLVIN. Vitnesses:

l JOHN W. ANDERSON, G. Ross 'ESHLEMAN

